WANTED : JTAG Access, Dead or Alive!

[erdem_ua]

I wanted to have JTAG access to our TV boards, dead or alive...
It's been here from old days. I remember JTAG on B series boards and we do nothing with it...

Today I bricked my TV again and I this time I don't have any trick to solve this issue. Probably my board gonna replacement.
But I noticed there is a JTAG port on the board.
Since board is ARM board, I believe we have something that we can with this port.
At least we could learn precious information from this port.
Also this leads our TVs un-brickable.

Person who give valuable information about JTAG control of our TVs, including B/C and D series will be rewarded...

[juusso]

Some info. Software inside (just press on icon).
http://www.multiupload.com/4D4OBNDV6I

Also common useful info about jtag.

B series jtag connection:
http://fotkidepo.ru/?id=photo:506656
http://fotkidepo.ru/?id=photo:506655

[juusso]

http://www.olimex.com/dev/arm-jtag.html

Code: Select all

FEATURES
Parallel port JTAG dongle interface, can be used with all ARM devices for programming and debugging.
uses ARM's standard 2x10 pin JTAG connector
no need for external power supply, all power is taken from the target board, supports targets working with 3.0-3.6 V
dimensions 50x40 mm (2x1.6") + 20 cm (8") cable 

Soft and schematics are there.

Also some hints on this forum.
http://electronix.ru/forum/lofiversion/ ... 71918.html

Firmware for jtag, at bootom you`ll find info about wiggler and jtag...
http://www.hjtag.com/download.html

[erdem_ua]

I pictured D Series JTAG port also.

I am gonna build a wiggler cable.

But a person who are familiar with JTAGing will help much.
Thanks.

Edit:
After inspecting JTAG thing much, I started to became familiar with it...
I believe, TV could be revived.
Since we have ARM cpus, I believe it's not needed to hard task.

I just handle my old old ADSL router, USRobotics 9105... Just open it's inside, inspected what it have. Located serial port and also JTAG port and I made connection from jtag...I cannot read/flash it's program but I can read CPU ID at least...

But this doesn't work on TV. Might be due Arduggler (Arduiono Wiggler) device... Don't know why exactly. I think TV as simply ARM7 platform, doesn't it?... Might, programs for Samsung telephone (uses JTAG protocol) work for TV board too. I have no any experience on ARM JTAGing. Also some pricey cables sold for the job from $150... But this datasheets give hopes for JTAG interface http://tinyurl.com/67m2mos

[erdem_ua]

I build but board not responded. TDO is HIGH all the time. Don't know why.

[nostromo1983]

The jtag adapter they talk into the samsung PDF (http://www.samsung.com/global/business/ ... 111008.pdf
is sold here and (pretty expensive) :http://www.aliexpress.com/product-fm/32 ... alers.html.Also seems like jtagkey-tiny is compatible with this Multi-ice standard:http://www.amontec.com/jtagkey-tiny.shtml
There are some things on ebay:http://cgi.ebay.com/ARM-Multi-ICE-JTAG- ... 0650532512
http://www.ebay.com/itm/ULINK2-USB-JTAG ... p4340.m185
http://www.ebay.com/sch/i.html?_from=R4 ... m+jtag+ice

[erdem_ua]

Thanks for info, I tried some parallel port dongles and they doesn't work. Changed the MB.

[juusso]

just bought this...
Don`t know how long does it take until adapter arrives.

Is there any other contacts for jtag except those one line (why not two???) on D6000board needed, Erdem? IMO - no, but might i`m wrong.

[erdem_ua]

They are just required pins for good connection.
Jtag is not standardized, so you also needed to adjust pin connections by hand. Don't expect if socket fit that holes.